US4838246A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Application part for an endoscope
Assignee: Airbus Defence and Space GmbH
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Filing: 1987-08-13
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Granted: 1989-06-13
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Expires: 2007-08-13
Abstract
Abstract The disclosure relates to an application part for rigid or flexible endoscopes having a viewing channel and a working channel extending parallel to the viewing channel, with the working channel being equipped with a guide as well as a defined stop for a fiber optic waveguide, which can be inserted and coupled with a laser light source, and the working channel having optics for concentrating the laser light emerging from the fiber optic waveguide onto a punctiform area. The part of the working channel surrounding the punctiform area is formed as shock wave reflector. Further, a flushing channel is provided, the outlet opening of which is at least partially directed onto the face of the optics from which the light emerges.
Inventors
- 👤 Andreas Hahn
- 👤 Fritz Wondrazek
- 👤 Frank Frank
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 00:52
CPC Classifications
A; A61; A61B; A61B1/00; A61B1/00064; A61B1/00071; A61B1/0008; A61B1/00091; A61B1/12; A61B1/127; A61B18/00; A61B18/18; A61B18/20; A61B18/22; A61B18/26; A61B8/00; A61B8/12; G; G02; G02B; G02B23/00; G02B23/24; G02B23/2407; G02B23/2423; G10; G10K; G10K15/00; G10K15/04; G10K15/046
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
134 words
In an application part for an endoscope, said application part comprising a viewing channel and a working channel extending parallel to said viewing channel; said working channel including a guiding means and a defined stop for slidable insertion of a fiber optic waveguide, selectively coupled to a laser light source, an improvement in said application part wherein said working channel includes an optics arrangement for concentrating the laser light emerging from the fiber optic wave guide onto a punctiform region, and further said working channel being arranged to extend beyond the optics arrangement in the direction of said punctiform region to form a shock wave reflector and further comprising a flushing channel having an outlet opening which is at least partially directed toward the face of said optics arrangement from which the light emerges.
Claim 2
Dependent Claim
134 words
In an application part for an endoscope, said application part comprising a viewing channel and a working channel extending parallel to said viewing channel; said working channel including a guiding means and a defined stop for slidable insertion of a fiber optic waveguide, selectively coupled to a laser light source, an improvement in said application part wherein said working channel includes an optics arrangement for concentrating the laser light emerging from the fiber optic wave guide onto a punctiform region, and further said working channel being arranged to extend beyond the optics arrangement in the direction of said punctiform region to form a shock wave reflector and further comprising a flushing channel having an outlet opening which is at least partially directed toward the face of said optics arrangement from which the light emerges.
Claim 3
Dependent Claim
38 words
The application part of claim 1, wherein said optics arrangement on the side facing the shock wave reflector includes a concave-convex lens, the concave surface of which is connected at the outer edge with said shock wave reflector.
Claim 4
Dependent Claim
34 words
The application part of either claims 1 or 2, wherein at least one lens of the optics arrangement adjacent to said shock reflector includes an elastic seal in the region of the lens mount.
Claim 5
Dependent Claim
33 words
The application part of any one of claims 1 or 2, wherein the lenses of said optics arrangement facing the shock wave reflector and the fiber optic waveguide being made from quartz glass.
Claim 6
Dependent Claim
32 words
The application part of any one of claims 1 or 2, wherein the lenses of said optics arrangement facing the shock wave reflector and the fiber optic waveguide being made from sapphire.
Claim 7
Dependent Claim
29 words
The application part of any one of claims 1 or 2, wherein the optics arrangement is a reduction optics arrangement with a reproduction ratio of no more than 1:4.
Claim 8
Dependent Claim
41 words
The application part of any one of claims 1 or 2, wherein the focal point of the optics arrangement and the focus of the shock wave reflector lie on the plane defined by the distal edge of the shock wave reflector.
Claim 9
Dependent Claim
28 words
The application part of any one of claims 1 or 2, wherein the viewing, working, and flushing channels extend parallel to one another and have a common sheathing.
Claim 10
Dependent Claim
16 words
The application part of claim 8 wherein said common sheathing is of a circular cross section.
Claim 11
Dependent Claim
16 words
The application part of claim 8 wherein said common sheathing is of an elliptical cross section.
Claim 12
Dependent Claim
16 words
The application part of claim 8 wherein said common sheathing is of an oval cross section.
Claim 13
Dependent Claim
17 words
The application part of claim 8 wherein said common sheathing is of a non-uniform round cross section.
Claim 14
Dependent Claim
29 words
The application part of any one of claims 1 or 2, wherein the proximal opening of the working channel includes a clamping device to clamp said fiber optic waveguide.
Claim 15
Dependent Claim
13 words
The application part of claim 1 wherein said endoscope is a flexible endoscope.
Claim 16
Dependent Claim
13 words
The application part of claim 1 wherein said endoscope is a rigid endoscope.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-06-12 | 1992-12-12 | 1993-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-06-12 | 1996-12-12 | 1997-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-06-12 | 2000-12-12 | 2001-06-13 | $7700.00 | Window Closed / Lapsed |